Mercury Rising: Identifying Elevated Levels in Your Water
- Published:
- Updated: November 21, 2024
Summary
Mercury contamination poses health risks, making it crucial to detect and reduce exposure.
- Sources include coal-fired plants, dental amalgams, and natural processes like volcanic activity.
- Health effects range from neurological issues to kidney damage and birth defects.
- Testing options include professional laboratory tests and home test kits, with filtration systems and limiting fish consumption as preventive measures.
Mercury in water is a grave public health issue as high levels of this heavy metal can have many health consequences. From volcanoes to human-made pollutants like industrial discharge, mercury has many pathways to our water supply. If we are going to save ourselves and our loved ones from mercury-based harms, knowing when mercury levels are too high in our water and doing something about it is key.
What is Mercury?
Mercury is a liquid, silvery metal that naturally exists in the crust of the planet. It’s employed in a wide variety of industrial processes (coal-burning power stations, for example) and released into the environment by nature (volcanic activity, weathering of rocks). Mercury that is released into the environment becomes methylmercury, a very toxic version of mercury that can find its way into the food chain and harm human health.
Sources of Mercury Pollution
There are many sources of mercury pollution, including:
- Coal-fired power plants: These are the largest source of mercury emissions in the United States, and they release mercury into the air and water through their smokestacks and coal ash disposal sites.
- Dental amalgams: Dental fillings that contain mercury can release small amounts of mercury into the water supply when people brush their teeth, use mouthwash, or dispose of old dental work.
- Industrial processes: Many industries, including mining, refining, and chemical manufacturing, release mercury into the environment as a by-product of their operations.
- Natural sources: Mercury is naturally present in the earth’s crust and can be released into the environment through volcanic activity and weathering of rocks.
What are the Health Effects of Mercury Exposure?
Exposure to mercury can have a significant impact on human health, with various negative effects on the nervous system, kidneys, reproductive system, and cardiovascular system. Neurological effects of mercury exposure include tremors, memory loss, and mood changes. Long-term exposure to mercury can cause damage to the kidneys, leading to kidney failure.
Mercury can also harm the developing fetus and cause birth defects, low birth weight, and developmental delays. Some studies have even suggested that exposure to mercury may increase the risk of cardiovascular disease. It’s important to be aware that the health effects of mercury exposure vary depending on the type of mercury and the route of exposure, with ingestion of methylmercury through contaminated fish and shellfish being the most common route of exposure for humans.
Testing for Elevated Levels of Mercury in Your Water
If you are concerned about elevated levels of mercury in your water, there are several options for testing. The most accurate way to test for mercury is to have your water tested by a professional laboratory, which will give you a precise measurement of the mercury levels. Home test kits for mercury are also available online and at some hardware stores, although they are less accurate than professional laboratory tests. However, they can still give you a general idea of the mercury levels in your water. Additionally, you can contact your local health department for information on the quality of your water and recommendations on reducing your exposure to mercury.
Reducing Your Exposure to Mercury in Water
You can avoid being exposed to mercury in your water if you find it is elevated:
Install a water filter: You can reduce your exposure by having a water filter that filters your water to remove the mercury. You have different water filtration systems available like activated carbon filter, reverse osmosis system and distillation systems.
Be very careful with fish and shellfish: Fish and shellfish are the largest source of methylmercury exposure for humans. If you want to be safer, don’t eat large predatory fish like shark, swordfish, king mackerel and tilefish which typically carry the highest concentrations of methylmercury.
Not to use mercury products: Most items, from thermometers to batteries to compact fluorescent bulbs, are made with mercury. When they’re disposed of, these products can leak mercury into the air and eventually into our waterways. So, you don’t want to be using products with mercury, and you don’t want to waste products with mercury.
Contribute to mercury reduction: There are several organizations and programs aimed at minimizing mercury pollution such as the United Nations Environment Programme’s Global Mercury Partnership and the United States Environmental Protection Agency’s Mercury Reduction Program. It is possible to do this work through advocacy, volunteering and donation in a way that can mitigate mercury levels in our water and preserve public health.
The Role of Governments in Reducing Mercury Pollution
The government can contribute to Mercury-free pollution and health care. They can do so by enforcing rules limiting the amount of mercury that can be released into the atmosphere by factories and power plants. Governments also have a responsibility to develop new technologies to minimise mercury emissions and encourage cleaner energy. Governments can also offer education and outreach programmes, telling people about mercury risks and how they can avoid them.
The Impact of Mercury Pollution on Wildlife
Not only is mercury pollution dangerous for humans, but it is also damaging to wildlife. Methylmercury builds up in fish and other marine life, which can be toxic to its health and reproduction. Mercury pollution has been associated in some instances with loss of birds and other species. This isn’t just a matter of individual animals’ health, it can also upend entire ecosystems and food webs.
The Connection between Mercury Pollution and Climate Change
Mercury contamination is a close match to climate change. Mercury from coal plants and other sources help drive climate change, because they push up atmospheric concentrations of greenhouse gases. Meanwhile, climate change can make mercury pollution more severe by releasing more mercury into the environment via natural processes (such as permafrost thawing and glacier melting). And the solution to that is to cut mercury and greenhouse gas emissions.
What are the Benefits of Reducing Mercury Pollution?
Reducing mercury pollution is not only health and environmental friendly, but many other things as well. For instance, mercury emissions from power plants can be cut and the air quality improved, resulting in public health and the environment being improved. It’s also possible to increase use of more clean energy to avoid overreliance on fossil fuels, one of the largest mercury emitters. Only if we do our part to cut mercury pollution can we make the world a safer and healthier place for future generations.
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